What is the difference between a circulator, circulating bath, thermostat and chiller?
Circulator, circulating bath or thermostat are all names for similar devices that very accurately control temperature of fluids over a wide cooling or heating range. These devices also have varieties of circulating pumps that are characterized by low pressure and low volume. They are usually small; bench-top sized, have modest cooling capacity, include a usable reservoir and are used for controlling applications where temperature accuracy and stability are necessary. In these FAQ’s, PolyScience will use the name circulator to define this type of device. A chiller, or recirculating chiller, is also a temperature controlled circulating device, but unlike a circulator, a chiller has greater cooling capacity, is usually somewhat less accurate in temperature control, and has greater pumping volume and pressure. Because of their greater cooling and pumping capacity, chillers are larger than circulators and are usually located on the floor rather than a benchtop. The temperature range of the
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